Lathe.



PLPLANTINGAr LATHE. APPLICATION FILED JUNE 28, I916.

. '5 SHEETS-SHEE'I' l.

WITNESSES: M We% Q WMfi gal ATTORNEYS Patented Aug. 6, 1918.

P. PLANTINGA.

LATHE.

APPLICATION )HLED JUNE 28.1916.

Patented Aug. 6, 19l&

5 SHEETSSHEET 2.

r" 4 Zia A TTORIVEYS P. FLANTINGA.

LATHE.

APPLICATION FILEDJUNEZBMQIG. I

Patented Aug. 6', 1918.

MEETS-SHEET 3- mvmron WITNESSES:

' V 8% 6 'ATTORNEYS" P. PLANTINGA.

LATHE. APPLICATION FILED JUNE 28 I916.

5 SHEETS-SHEET 4.

Patented Aug. 6, 1918.

I I E g r/mm im/Mrs P. PLANTINGA.

LATHE.

APPLICATION FILED JUNE 28. I916.

1,274,770. Patented Aug. 6, 19m

' EET 5- 5 SHEETS-SH WITNESSES: INVENTOB Zia/,4 TTORIVE Y5 State ofNew/"York, have invented'c'ertain new and useful lniprovemen'tsin'Lathes; t and I do hereby deolarethe following to be I Xalot'desofip'tion of the;

I same, reference being" had to the aeeognpany Y QF I PETER PLANTINGA,on ROCHESTER, 'iqE'w YORK, AssIGnoR'To' nAvis :MACHINE Toon' COMPANY,Ind, OF ROCHESTER, NEW YORK, 1 oonnoRA'rIoNoF NEW O K.

LATHE. Y

To dll whom it may cogweimk 7 I I Be it knowifthat I; PETERPnan'i'insgfo'f Rochester, in the County of. lylonroe and l '1ngidrawings; I forming a of, this specifiCELiTl'Qll; fanjdfto the referencecharacters m'iirke d thereon? My 31n e11, 1on relates to improvements inI lathes'and has for its objeott'o provide a machine designed partieulaily for intei ioi' I and exte'iioi' ielievinfg npon Various kinds ofwork, such as taps, dies' and dreamers; A flll'thel objectof theinvention is to provide a lathe' earrying I tool "holding" memberarranged toIhe actnated'v by eith'enof two op- Eign e lj'is a 'sifdef'eleval 1, I "embodying one'ffoifmof the invention; A a

- ingfislide tpansVeI seIy ofthemaehine; I

.Fig. 5 is 'a"V1e.W 111 seet onjtakenj on l ne.

ara [of Eig. l';' 24 meshing with mack 5' on the bed 10, the

nisin shoWn ig.;5 I

10j-is a sectional vie illustrating an- I other modification of' themeohanis n shown f erati ng 'inelnbeis jointly foonneeted with the toolholdin gwlnembei'. To thjes'e' and other ends" the. invention consistsin, icei tain I iniprovements and "coinloina tions of parts; all

as ivilljbe'f'hereinaiter ino t'e iii'llyde's'cribed, 25

the n'o 'el featni es being'fpointed' ont'in the" claims atth'e end" ofthespeification. I" I a 'm hine ,Et g- *is-a f 'c1 l j i ii afgthestmeii3 is fan 'enlai gefddetail :planf VieW of L 1i PQr i Q s i dsf iwb shewII a an enlarged scale a {portion ofqthe, niechak nis n forautomatically moving the tool hold-' I Fig'. 6 i s, a {rag entafyltional eleva tion aken an line 16-1 of R g i i '7'is "aTvi ewIin'section taken on line,

Fig. 8 isa'seetional' View takenon line ml of F g- 7; av It '7 t 1 Fig.97 1s a sec "ional elevation of a slightly modified foiim ofth tztinoperated niechaa in Fig; 5; ig. ,11 is m ch n m, nd

Fig: 12 s asc tional viewfiuqsmting stillanother nodifieation'of said II I I i fwhieh" a'reelproeatoliy,toolhold ngsllde'33 means foi'flookin'g. the shoif t shaft shown in Fig; 8, i" I Similaij reference"ehara oters throughout thei severalrviews indicate" the same parts;

Vided 'a' uniVersaLteiescopie shaft opefatively connected with toolsupporting slide and j In darrying ont my invention I 'haVe'prO- 1arranged to beZ rocked bya cam actuated I leiei for moving a toolinto'an'dout of en-f gagelnentlwitl a Work piece-in conjunction withindependent means for moving the slide longitudinally andtransverse1y-ofthe machine." As anexample of the kind of j voik which thepiiesentinvention is capable ofpeffonning I' have shown a Work piece inthe i-forml of a tap adapted to? be operated upon by'a' i'eliev-ingattachment, it being on-- Y derstood I that the machine is adaptable forother classes' of"work as Well, such as interior relieving on shaping ofdiflerent kinds: I Referring to the drawings" by numerals, 1O

represents the frame or 'bedof. the machine upon which is n ounted aspindle 11 sup poTt'edin bearingsg l2f and provi'dedflwith a I 'conepulley 13E 'AIwoi k piece l'fiin the form I I of a tap is ear-ried hyfasupport l 5I the"op i po'site. ends of which are jsupportedion i temlhfandf lfl Ii Rotati'oi i of worjls "pieee 'is eii' eete'd h y t h erotation ofthe di'iY- j "ing 15 1'ate 18' on the spindle 11, A feariiage 191' is reoiPIO CaIly mounted longitudinally oi'theniaehinenponguides 20; and may he 1 Iii-operated; at difi'erent speedsjby niea'nsofasystem? of l change gears suitably connected 'Wlth th e 'oar1:iage;-Thecarriage may also 1 befi'ecipioeated by hand through the naediurn ofthe handle2lon a 'shaft 22 journaled in an api'on23fan'd,cai'fying apinion j carriage 119 in; any preferred manner. A

transverse slide 26 is mounted upon-the car- 'riage 1J9and is ananged'tobe reeiproeated bymeansrof a"hand1e"27Ionafeed screw havingth'readedengagenient with a lug 29fprojeeting from the'slide. Upon theslide 26 is rotatablyfmounteda table 30 to be i evolvedto any.desiredposition, I

The table is'pro'vided Withg iides 32 upon @Which is'no mally heldstationary upon' I th 7 Slide yi m ans oft-the clamping-bolts 31- hicmay ibetloosened to permitthe abl a is niOu'ntedas. shown in and 7. TheI slide 33 is adapted to receive any suitable tool holding member suchas the tool post 34 carrying the tool 35 adapted to operate member 68keyedupon ashaft69. The free end of the rod 65 will move s'uflicientlywhen upon the, work piece 14 in a manner which will presently bedescribed; Theslide 33- is arranged to be reciprocated bothautomatically and by hand and in the case of the latter by means of afeed screw 36, the

outer "end 37 of which is journaled in alug" 38 on an extension 39carried by the slide 33. The feed screw 36 is rotated by a handle 40,the screw having threaded engagement with a rack 41 meshing with a gearwheel 42 rigidly mounted upon a short shaft 43 in a recess 44 formed inthe table 30. The

slide 33 may be moved by the turning of the handle 40 to properlyposition the tool 35- with respect to the work piece when it isdesiredto operate the-machine by rotation of the spindle 11. Theopposite ends of the shaft 43 are journaled upon the table 30 aspressure is exerted upon the head of the screw 61 to permit the screwto. turn without having to removethe rod from the arm. Likewlse, thehead of the screw 57 1S notched as indicated at 57 to receive the outerend of the rod 58, the inner end of which is seated 'in the arm 55. Thetrip 67 is pivotally mounted upon a pin 70 seated in a recess 71 formedin the arm 56 and is provided with a shoulder 72 which normally restsagainst the Wall- 73 of the arm to prevent downward movement of themember from theposition shown in Fig. 5.

seated in a recess 75 as shown. The cam member 68 is provided with aplurality of lobes 76 whichare arranged when rotated 1n one dlrectlon toengage a curved or bevel I face 77 on'the trip to cause outwardmoveshown in Fig. 8, the outer end of the shaft nected with a camcontrolled shaft 51. The

shaft 43 is connected with the sleeve 43* by means of a pin 44 as shownin Fig. 8. In case it is desired to use the slide 33 in dependently ofthe'universal shaft the latter is removed and a collar 45 is placed uponthe inner end of the shaft 43 and locked thereon by means of the pin 44The collar is locked upon'the slide by means of a pin 46 as shown inFig-12. The shaft 43"and pinion 42 are thus prevented from turningwhereby the rack 41 is held when the feedsc rew 36 is rotated to moVQtheslide 33! The ends of theshaft 51 arejournaled in spaced'bearings 52and- 53 preferably formed integral witha casing 54 positioned upon thebed'of the machine; Mounted upon the shaft 5l between the bearings 52and 53 and withinthe casing 54 is a bell tending arms 55 and 56respectively, as shown in Fig 5. The arm 55-carr1es'an ad ustable stopscrew 57 which engages the head of a spring actuated bolt 58, the spring59' being'housed in a recess 60 formed-within the casing 54. The arm 561s provided at its lower end with a gage screw 61, the inner end ofwhich rests upon a removable stop 62 seated upon a projection 63in whichis formed a recess 64 as shown in Fig.5. The arm 56 carrles a rod 65,the free end or which 71s arranged to coiiperate with the notches 66upon the head '66fof the adjust:

ing screw 61 for holding the screw against accidental displacement whenset to properly position the trip with respect to' 'a cam ment' of thearm 56 and a consequent rocking of the shaft 51, which motion will betransn'iitte'd to the short shaft 43 thereby causing the gear- 42 tomove the rack 41 for advancing the tool 35 into cutting engagement withthe work piece 14. As each one of the lobes 76 disengages the beveledprojection 77 on the trip the shaft 51' and all of the parts operativelyconnected therewith are returned to normal position by the action of thespring 59 in forcing the arm 55 back to the position shown in 5. Therotation of the shaft 69 carrying thecam member 68 is effected by therotation of the gear 78 driven bythe gear 79 meshing with a gear '80ona-shaft 81. The shaft 81is journaled in a bracket 82 and at the rear ofthe bracket and upon said shaft is mounted a gear 83meshing'withag'ear'84 which is The trip is held 'in this position by a spring 74driven bya' gear 85 on'the spindle "The gear 7 9'fis mount dfupon stud86 which'is movable in a slotf87 formed in an arm "88 pivoted onthe camshaft 69. The arm 88is provided with a segment 89 having a curved slot90 through which projects a bolt 01- stud 91 for clampin or securing;the arm a after it has beenshifted'to any desiredpof crank havinghorizontally a-ndvertically exsition to accommodate different sizegearson the stud 86 "which are adapted to 'mesh with and be driven by thegear" 80 for driving' the cam shaft 69." In' thfe present m stance anadditional and smaller gear-'92 is positioned upon the stud'86andebnnect'ed with the gear 79, and upon reversing the position of thesegears thesmall gear may I be made to mesh with the gear 78" by mov ingthe stud "8 6 downwardly in the -slot 87.

At the'same'time'by loosening the bolt 90 the arm 88 maybe lowered untilthe gear 92 projection 99'pr'ovided for rocking the arm theslide awayfrom thecamsasit is moved upwardly upon anincline by said shoulders Themodification shown in Fig. 10 is essen-' 40.

V I is adapted for interior relieving while the arrangement in Fig. 5 isfor alfording ex 'terior relieving asv already described. This isaccomplished by reversing the rocking movement of the shaft 51' bytheuse of av the .movement of the camshaft 69.,the lever; 93, which ispivotedupon theshaftSLand carries the gears 84: 311N194, may be pulleddownto cause the former of saidgears to disengage the gear, 85 and thelatter to be brought into engagement therewith. A-

pivotal spring actuated locking member is carried by the lever 93 andprovided with J a projection 96 at one end adaptedto be moved into andout oflockihgengagement with a portion of the fram'e or bed of themachine. When therotation of the cam. shaft 69 is reversed the shoulders97 of the lobes/76 will engage the face 98; of the trip 67'and e evatethe 'trip without effecting the.

operation of the amiss. It will. be understood that by means of thescrewrfil the; trip 67 1 may be moved toward and away from the cams ,76or..out of engagement, therewith to regulate the throw of the sha'ft.

51 for adjusting the movement of the slide 33 and tool 35 with. respectto th'e- .work

piece 14, whereby cuts of varying depth may be formed upon said workpiece.

In the modification shown in Fig. 9 the 100, which corresponds tofthetrip 67- in Fig. 5', 'isjmou'nted .upona slide'havingQ guides 101movable' uponthe inclined fac'es 1020f the arm 100. Thej'slide isactuated], downwardly by a spring 103 seatedina' recess 104 as showniThepurpose of moving the slide upon an incline is to permit the shoulder97 of the lobes 7 6.to 'clear the projection 99 without "rockingfthe,arm, which is accomplished by the movement of tially the same as thatshown in Fig. 5 but bell crank 105 upon the horizontal arm of which ispivoted the trip 67 instead of upon the vertical arm, as shown in Fig.5; In substituting the bell crank 105 in Fig. 10 it is also necessary tomove the spring 59' and bolt 58 to the recess 64; and the stop 62 to therecess 60, as well as the stop screw 57 and gage screw 61. I a

In the modification shown in Fig. 11 the mechanism is so arranged thatthe same bell crank can be used for performing both the interior andexterior relieving. "In this in stance the arms of the bell crank 106are similarly constructed, the ends of which are forked as indicated at107 to receive a removable stud 108 thro-ugh which a bolt/109- isthreaded having a head 110 forming a seat for oneend of a spring 111seated in a recess 112 as shown. Upon the outer end of the bolt 109 issecured a thumb nut 113 by said pivoted member.

for turningthe. boltto regulate the tension upon the'spring 111. When itis desired ,to

reverse the operation=of the bell crank and gaging faces 118 adapted tobe engaged by 0 the ,lobes-76 :as shown. When-one of the; tripslisinposition to; be engaged" by the lobes 7 G'the other is moved out of thepath ofsaid cams -The position of the trips 117, for reversing themovement of the shaft 51 851 is indicated by dotted lines in Fig; 11. Anadjustablestop screw 119 isprovided for limiting the movement o-f thebell crank in one direction while a screw 119 is employedwhenthelever ismoved in the oppo- I site direction by the camduring interior relieving;The trips 11? are free to move upon their pivots in, one directiombutare prevented from moving in oppositedirections by theshoulders 120which engage the bolts 115 as shown. It will thus be'seen thatrotationof the lobes 7 6 in one direction will cause .the rocking of theshaft 51 while rotation in an opposite direction will noteffectmovementof said shaft. Y 4 P 1 I claim as my invention;

a 1-. A; lathe comprising i in combination a movable work holdingmember, a slide,. a

universal shaft operatively connected with the slide, a second shaftconnected with said universal shaft, an arm carried by the secondmentioned shaft, a cam, vmeans for rotating the cam in oppositedirections, a

pivotalnlember connectedwith the arm extending 1n the path of the camand arranged to actuate the arm uponrotation of thecam in one directiononly. V V

2. A lathe comprising in combination a movable work holding member, aslide, a 115 universal shaft operatively connected with the slide, asecond shaft connected with said first mentioned shaft, an arm carriedby the second mentioned shaft, a cam, means for rotating the cam inopposite directions, a 0

pivoted member'connected with the arm eX- tending in the path of the camand arranged to actuate thearm upon rotation of the cam in one directiononly, and means. for returning the arm to normal position when moved 253. A lathe comprising in combination 3.. work holding member, a slide, ashaft operatively connected with the slide, an armcarried by said shaft,a cam, means for moving atively connected With the -slide,- a cam,,-.

means for actuating the camyan" arm eonnectedwvith' the shaft, a movablemember carried-bythe arm normallyin position to effect: movement of theshaft by moveinent' of the cam'and movable to prevent operation of theshaft-by movementof the cam.

6. A lathe comprising-in combination a Workholding member; a toolholdingslide,- a movable racknpon the slide, a-feed screw carried by theslidein engagement with the rack, arotatablymounted shaft, a gear n ponI the shaft in engagement with the Tack, a uni versaltelescopic shaftoperatively connected with i and removable; from saidfirst men tioned.shaft, K and means for locking the first mentioned shaft to preventmovement of the rack, wherebywhensaid universal shaftis removed and t-hefeed screw operated movement will be imparted to the slide' 7. In alathe, the combination of Wonk gamma holding means, a slide, a tool-hblding'mem-- ber-on the slide, a shaft opeiativelyconn'ected-With theslide, a bell crank lever on the shaft, -mea ns' for reciprocating thebell crank, and means for changing the n'orm'al position of the bellcrank for 'varying'the extent" of the recip1-oc'ator'ymovements im--parted thereto;

8. In a lathe, "the combination" 0f" WOllC' holdmgmeans, a sl1de,--atool holding membei' on the slide, a shaft operatively connected Withthe slide, a-bellcrank lever on the shaft, acam, means forrotating'thecam, and a proj ejcti-on 'o'nthe' bell- 'chank adj ustable into and'outof the'path' of thebam.

9. In a lathe, thecombin'aitio'n of WOT; holding means, a slide, a toolhbldingr'memher on the slide, a shaft operatively 'con-' nee-ted "Wltl1'the slide, a cam, means forrotating-thecam, a bell crank lever on theshaft, and a plurality of dogs adjustable on the bell crank into and outof tliepath of the cam:

10."In "a lathe, the combination of Work holding'means, a slide, a toolholding memher on theslide, a shaft operatively conneoted' with theslide, a cam, means for rotating the cam, a bell crank lever. on theshaft, and'a dog adjustablymounted on each arm of the bell crank.

PETER PLAN'TINGA:

Vi'tnesses:

G. VVILLARD "B1611, HAnRmTT. VAY.

Copies of this patent-may, be obtained for five cents eachg'byaddressingthe"""commissibnerof Patents,

Washington, D; 05

